// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-generator-function-definitions
es6id: 14.4
description: >
  YieldExpression contextually recognizes the `in` keyword as part of a
  RelationalExpression
info: |
  Syntax

  yield [no LineTerminator here] AssignmentExpression[?In, +Yield]
features: [generators]
---*/

function Test() {
    var obj = Object.create(null);
    var iter, iterResult, value;
    function* g() {
      value = yield 'hit' in obj;
      value = yield 'miss' in obj;
    }
    obj.hit = true;

    iter = g();

    iterResult = iter.next('first');

    assert.sameValue(iterResult.done, false, '`done` property (first iteration)');
    assert.sameValue(iterResult.value, true, '`value` property (first iteration)');
    assert.sameValue(
      value, undefined, 'generator paused prior to evaluating AssignmentExpression'
    );

    iterResult = iter.next('second');

    assert.sameValue(iterResult.done, false, '`done` property (second iteration)');
    assert.sameValue(
      iterResult.value, false, '`value` property (second iteration)'
    );
    assert.sameValue(value, 'second', 'value of first AssignmentExpression');

    iterResult = iter.next('third');

    assert.sameValue(iterResult.done, true, '`done` property (third iteration)');
    assert.sameValue(
      iterResult.value, undefined, '`value` property (third iteration)'
    );
    assert.sameValue(value, 'third', 'value of second AssignmentExpression');
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
